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Finding the Fourth Proportional to 71,630.31, 107,466.95 and 28,913.76

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Solution

The fourth proportional to 71,630.31, 107,466.95 and 28,913.76 is: 43,379.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,630.31 : 107,466.95 = 28,913.76 : x
  2. Step 2: Convert to fraction form
    71,630.31/107,466.95 = 28,913.76/x
  3. Step 3: Cross multiply
    71,630.31x = 107,466.95 × 28,913.76
  4. Step 4: Simplify right side
    71,630.31x = 3,107,273,455.66
  5. Step 5: Solve for x
    x = 3,107,273,455.66/71,630.31
  6. Step 6: Final answer
    x = 43,379.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.